#!/usr/bin/bash
#
# Copyright 2008-2018 the Pacemaker project contributors
#
# The version control history for this file may have further details.
#
# This source code is licensed under the GNU General Public License version 2
# or later (GPLv2+) WITHOUT ANY WARRANTY.
#
if [ -e ~/.cts ]; then
    . ~/.cts
fi
anyAsked=0

[ $# -lt 1 ] || CTS_numtests=$1

die() { echo "$@"; exit 1; }

if [ -z "$CTS_asked_once" ]; then
    anyAsked=1
    echo "This script should only be executed on the test master."
    echo "The test master will remotely execute the actions required by the tests and should not be part of the cluster itself."
    
    read -p "Is this host intended to be the test master? (yN) " doUnderstand
    [ "$doUnderstand" = "y" ] \
        || die "This script must be executed on the test master"
fi

if [ -z "$CTS_node_list" ]; then
    anyAsked=1
    read -p "Please list your cluster nodes (eg. node1 node2 node3): " CTS_node_list
else
    echo "Beginning test of cluster: $CTS_node_list"
fi

if [ -z "$CTS_stack" ]; then
    anyAsked=1
    read -p "Which cluster stack are you using? ([corosync]): " CTS_stack
    [ -n "$CTS_stack" ] || CTS_stack=corosync
else
    echo "Using the $CTS_stack cluster stack"
fi

[ "${CTS_node_list}" = "${CTS_node_list/$HOSTNAME/}" ] \
    || die "This script must be executed on the test master and the test master cannot be part of the cluster"

printf "+ Bootstraping ssh... "
if [ -z "$SSH_AUTH_SOCK" ]; then
    printf "\n + Initializing SSH "
    eval "$(ssh-agent)"
    echo " + Adding identities..."
    ssh-add
    rc=$?
    if [ $rc -ne 0 ]; then
	echo " -- No identities added"
	printf "\nThe ability to open key-based 'ssh' connections (as the user 'root') is required to use CTS.\n"

	read -p " - Do you want this program to help you create one? (yN) " auto_fix
	if [ "$auto_fix" = "y" ]; then
	    ssh-keygen -t dsa
	    ssh-add
	else
	    die "Please run 'ssh-keygen -t dsa' to create a new key"
	fi
    fi
else
    echo "OK"
fi

test_ok=1
printf "+ Testing ssh configuration... "
for n in $CTS_node_list; do
    ssh -l root -o PasswordAuthentication=no -o ConnectTimeout=5 "$n" /bin/true
    rc=$?
    if [ $rc -ne 0 ]; then
	echo " - connection to $n failed"
	test_ok=0
    fi
done

if [ $test_ok -eq 0 ]; then
    printf "\nThe ability to open key-based 'ssh' connections (as the user 'root') is required to use CTS.\n"

    read -p " - Do you want this program to help you with such a setup? (yN) " auto_fix
    if [ "$auto_fix" = "y" ]; then
        # XXX are we picking the most suitable identity?
        privKey=$(ssh-add -L | head -n1 | cut -d" " -f3)
        sshCopyIdOpts="-o User=root"
        [ -z "$privKey" ] || sshCopyIdOpts+=" -i \"${privKey}.pub\""
        for n in $CTS_node_list; do
            eval "ssh-copy-id $sshCopyIdOpts \"${n}\"" \
                || die "Attempt to 'ssh-copy-id $sshCopyIdOpts \"$n\"' failed"
        done
    else
        die "Please install one of your SSH public keys to root's account on all cluster nodes"
    fi
fi
echo "OK"

if [ -z "$CTS_logfile" ]; then
    anyAsked=1
    read -p " + Where does/should syslog store logs from remote hosts? (/var/log/messages) " CTS_logfile
    [ -n "$CTS_logfile" ] || CTS_logfile=/var/log/messages
fi

[ -e "$CTS_logfile" ] || die "$CTS_logfile doesn't exist"

if [ -z "$CTS_logfacility" ]; then
    anyAsked=1
    read -p " + Which log facility does the cluster use? (daemon) " CTS_logfacility
    [ -n "$CTS_logfacility" ] || CTS_logfacility=daemon
fi

if [ -z "$CTS_boot" ]; then
    read -p "+ Is the cluster software started automatically when a node boots? [yN] " CTS_boot
    if [ -z "$CTS_boot" ]; then
	CTS_boot=0
    else
	case $CTS_boot in
	    1|y|Y) CTS_boot=1;;
	    *) CTS_boot=0;;
	esac
    fi
fi

if [ -z "$CTS_numtests" ]; then
    read -p "+ How many test iterations should be performed? (500) " CTS_numtests
    [ -n "$CTS_numtests" ] || CTS_numtests=500
fi

if [ -z "$CTS_asked_once" ]; then
    anyAsked=1
    read -p "+ What type of STONITH agent do you use? (none) " CTS_stonith
    [ -z "$CTS_stonith" ] \
        || read -p "+ List any STONITH agent parameters (eq. device_host=switch.power.com): " CTS_stonith_args
    [ -n "$CTS_adv" ] \
        || read -p "+ (Advanced) Any extra CTS parameters? (none) " CTS_adv
fi

[ $anyAsked -eq 0 ] \
    || read -p "+ Save values to ~/.cts for next time? (yN) " doSave

if [ "$doSave" = "y" ]; then
    cat > ~/.cts <<-EOF
	# CTS Test data
	CTS_stack="$CTS_stack"
	CTS_node_list="$CTS_node_list"
	CTS_logfile="$CTS_logfile"
	CTS_logport="$CTS_logport"
	CTS_logfacility="$CTS_logfacility"
	CTS_asked_once=1
	CTS_adv="$CTS_adv"
	CTS_stonith="$CTS_stonith"
	CTS_stonith_args="$CTS_stonith_args"
	CTS_boot="$CTS_boot"
EOF
fi

cts_extra=""
if [ -n "$CTS_stonith" ]; then
    cts_extra="$cts_extra --stonith-type $CTS_stonith"
    [ -z "$CTS_stonith_args" ] \
        || cts_extra="$cts_extra --stonith-params \"$CTS_stonith_args\""
else
    cts_extra="$cts_extra --stonith 0"
    echo " - Testing a cluster without STONITH is like a blunt pencil... pointless"
fi

printf "\nAll set to go for %d iterations!\n" "$CTS_numtests"
[ $anyAsked -ne 0 ] \
    || echo "+ To use a different configuration, remove ~/.cts and re-run cts (or edit it manually)."

echo Now paste the following command into this shell:
echo "/usr/libexec/platform-python `dirname "$0"`/CTSlab.py -L \"$CTS_logfile\" --syslog-facility \"$CTS_logfacility\" --no-unsafe-tests --stack \"$CTS_stack\" $CTS_adv --at-boot \"$CTS_boot\" $cts_extra \"$CTS_numtests\" --nodes \"$CTS_node_list\""
